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A manual of poisonous plants, chiefly of eastern North America, with brief notes on economic and medicinal plants, and numerous illustrations - Pammel, L. H. (Louis Hermann), 1862 -1931 (The Torch Press, 1911)

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The natural history of plants; their forms, growth, reproduction, and distribution - Kerner von Marilaun, Anton, 1831 -1898 (Blackie, 1894)

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